272 SYSTEMATIC BOTANY. 



corolla greenish yellow, or dull red ; upper lip vaulted, terminating in 2 teeth, 

 turned downward. In fields, 6'-i5' high. May-July. 



14. Melampyrum. Calyx campanulate, 4-cleft ; the lobes with 

 long, bristly points. Corolla-tube cylindrical, larger above ; upper lip 

 arching. Stamens 4, included in the upper lip. Capsule usually 4- 

 seeded, oblique, compressed. 



M. PRATENSE (Coiv-zvheaf). Smooth; stem erect, branching; leaves 

 opposite, lanceolate, or linear, petiolate ; upper ones larger, with a few long 

 teeth ; flowers solitary, remote ; calyx smooth ; corolla yellowish. In dry 

 woods, 6'-io' high. July-August. 



Order LIX. LENTIBULACE^ (Bladderivort Family}. 



Herbs, growing in the water or mud. Leaves radical ; when 

 floating in the water much dissected, and furnished with air- 

 bladders ; when growing on land, entire and fleshy. Flowers 

 showy, very irregular. Calyx of 2-5 sepals, distinct, or partially 

 united. Corolla bilabiate, personate, tube very short, spurred. 

 Stamens 2, inserted on the upper lip. Anthers i -celled. Ovary 

 free from the qalyx, I -celled. Style I. Fruit a many-seeded 

 capsule, 



Utricularia. Calyx 2-parted, with nearly equal lips. Corolla 

 irregularly 2-lipped. personate ; the lower lip projecting, and sometimes 

 closing the throat, if. 



1. U. INFLATA (Inflated Bladderwort^.Upptt leaves floating in a 

 whorl of 5 or 6, which are inflated into oblong bladders, but dissected at 

 apex into capillary segments ; lower leaves submerged, very finely dissected, 

 and bearing many little bladders ; scape projecting above the water, 4-6- 

 flowered ; flowers large, yellow, very irregular, spurred, striate, emarginate, 

 upper lip of the corolla broad -ovate, entire ; lower 3-lobed. Common in 

 ponds. July-August. 



2. U. VULGARIS (Common Bladderworf). Leaves all submerged, 

 crowded, dissected into very numerous, capillary segments, furnished with 

 little bladders ; flowers 5-12, pedicellate, yellow, very showy, alternate ; spur 

 conical, obtuse, much shorter than the corolla. Common in ponds. June- 

 August. 



Order LX. BIGNONIACE^E. 



Trees, or shrubby, climbing, or twining plants. Flowers usu- 

 ally large and showy. Leaves simple, or pinnately parted. Co- 

 rolla broad at the throat, with a bilabiate or irregularly 5-lobed 

 limb. Stamens 5, I or 3 sterile, when 4, often didynamous. 

 Ovary 2-celled, free from the calyx, surrounded by a fleshy disk at 



